diff --git a/_config.yml b/_config.yml
index 78636c4..3a03cad 100644
--- a/_config.yml
+++ b/_config.yml
@@ -5,7 +5,7 @@ remote_theme: pmarsceill/just-the-docs
 
 
 title: DiD
-description: Follow the latest developments in the DiD literature.
+description: Difference-in-difference package tracker.
 #baseurl: "/DiD" # the subpath of your site, e.g. /blog
 #url: "https://asjadnaqvi.github.io/DiD/" # the base hostname & protocol for your site, e.g. http://example.com
 
diff --git a/docs/02_R.md b/docs/02_R.md
index 5dc3405..7a24cfc 100644
--- a/docs/02_R.md
+++ b/docs/02_R.md
@@ -43,4 +43,3 @@ Brantly Callaway and [Pedro H.C. Sant'Anna](https://pedrohcgs.github.io/) [<img
 [Olivia Healy](https://www.oliviajhealy.com/home) [<img width="12px" src="https://cdn.jsdelivr.net/npm/simple-icons@v5/icons/twitter.svg" />](https://twitter.com/olivia_j_healy) has a [presentation](http://resources.oliviajhealy.com/TWFE_Healy.pdf) that dicusses the DiD literature and also goes over the cs-did implementation in R.
 
 
-A big thanks to [Taylor Wright](https://github.com/taylorjwright) [<img width="12px" src="https://cdn.jsdelivr.net/npm/simple-icons@v5/icons/twitter.svg" />](https://twitter.com/taylor_wright) for initially helping with identifying the R packages!
diff --git a/docs/03_julialang.md b/docs/03_python.md
similarity index 62%
rename from docs/03_julialang.md
rename to docs/03_python.md
index 52f5324..e0ad89f 100644
--- a/docs/03_julialang.md
+++ b/docs/03_python.md
@@ -5,14 +5,14 @@ image: "../../../assets/images/DiD.png"
 nav_order: 4
 ---
 
-# Julia packages
+# Python packages
 
 This is still being updated. See links below for details. There is also a [Julia DiffinDiff](https://github.com/JuliaDiffinDiffs) group on GitHub which contains various packages.
 
 
 | Name | Installation |  Package by | Reference paper |
 | --- | --- | --- |   --- |
-| InteractionWeightedDIDs.jl  | [GitHub](https://github.com/JuliaDiffinDiffs/InteractionWeightedDIDs.jl)   |    |    |
-| SynthControl.jl  | [GitHub](https://github.com/nilshg/SynthControl.jl)   |    |    |
+| csdid  | [GitHub](https://github.com/d2cml-ai/csdid)   | [Alexander Quispe](https://github.com/alexanderquispe), [Alexander Fischer](https://github.com/s3alfisc)   | Callaway and Sant'Anna 2021  |
+
 
 
diff --git a/docs/04_julialang.md b/docs/04_julialang.md
new file mode 100644
index 0000000..bb4cd9e
--- /dev/null
+++ b/docs/04_julialang.md
@@ -0,0 +1,19 @@
+---
+layout: default
+title: Julia packages
+image: "../../../assets/images/DiD.png"
+nav_order: 5
+---
+
+# Julia packages
+
+This is still being updated. See links below for details. There is also a [Julia DiffinDiff](https://github.com/JuliaDiffinDiffs) group on GitHub which contains various packages.
+
+
+| Name | Installation |  Package by | Reference paper |
+| --- | --- | --- |   --- |
+| DiffinDiffs.jl  | [GitHub](https://github.com/JuliaDiffinDiffs/DiffinDiffs.jl)   | [Junyuan Chen](https://github.com/junyuan-chen)   | Sun and Abraham 2021   |
+| InteractionWeightedDIDs.jl  | [GitHub](https://github.com/JuliaDiffinDiffs/InteractionWeightedDIDs.jl)   | [Junyuan Chen](https://github.com/junyuan-chen)   |  Sun and Abraham 2021  |
+
+
+
diff --git a/docs/code/06_08_stackedev.md b/docs/code/06_08_stackedev.md
index 8dc098a..045d876 100644
--- a/docs/code/06_08_stackedev.md
+++ b/docs/code/06_08_stackedev.md
@@ -41,6 +41,12 @@ help stackedev
 
 ## Test the command
 
+Define the reference year:
+
+```stata
+ren F_1 ref  //base year
+	
+```
 
 Let's run the basic `stackedev` command: